DRAFT
2025-09-22 13:14:07
Type: Object/s-Discovery/Classification
Bibcode: 2025TNSAN.290....1S
Final(?) ePESSTO+ spectroscopic classification of optical transients
Authors: A. Sahu, B. Warwick, B. Godson, J. Lyman (Warwick), J. Sollerman (Stockholm), X. Sheng (QUB), L. Galbany (ICE-CSIC/IEEC), D. Malesani (DAWN/NBI and Radboud), J. Anderson (ESO), T.-W. Chen (NCU), M. Gromadzki (Warsaw), C. Inserra (Cardiff), E. Kankare (Turku), T. Müller Bravo (Trinity), P. Pessi (Stockholm), O. Yaron (Weizmann), D. Young (QUB), A. Horowicz (Weizmann), J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), S. J. Smartt, K. W. Smith (Oxford/QUB), S. Srivastav, H. Stevance (Oxford), M. Fulton, M. McCollum, T. Moore, J. Weston (QUB), L. Shingles (GSI/QUB), L. Rhodes (Oxford), J. Sommer (LMU/QUB), A. Rest (STScI), C. Stubbs (Harvard)
Source Group: ePESSTO+
Keywords: Transient, Supernova, Optical, Spectroscopy
Abstract:
This report includes classifications of three Type Ia SNe, one Type Ic and one Type II SN.

ePESSTO+, the advanced Public ESO Spectroscopic Survey for Transient Objects (Smartt et al. 2015 2015A&A...579A..40S), reports the following supernova classifications. We note this is the last night of observations for ePESSTO+ in its current format.

Targets were supplied by the ATLAS survey (Smith et al. 2020 2020PASP..132h5002S).

Observations were performed on the ESO New Technology Telescope (NTT) at La Silla on the night of 2025 September 21, using EFOSC2 and Grism 13 (3985-9315A, 18A resolution). Classifications were done using SNID-SAGE (Stoppa et al. in prep).

The classification spectra and additional details can be obtained from http://www.pessto.org (via WISeREP) and the IAU Transient Name Server.

The classified objects are listed in the Related Objects table below.

Show current TNS values
Catalog Name Reported RA Reported DEC Reported Obj-Type Reported Redshift Host Name Host Redshift Source Phase (days) Remarks TNS RA TNS DEC TNS Obj-Type TNS Redshift
TNS 2025xot [ATLAS25ljv] 01:37:21.635 -59:57:46.09 SN Ia 0.05 0.05 Redshift from template matches. 01:37:21.635 -59:57:46.09 SN Ia 0.05
TNS 2025xox [ATLAS25ljz] 01:48:25.072 -76:13:18.89 SN Ia 0.08 Redshift from template matches. 01:48:25.072 -76:13:18.89 SN Ia 0.08
TNS 2025xli [ATLAS25lgd] 00:59:08.677 -74:28:54.86 SN Ia 0.05 Redshift from template matches. 00:59:08.677 -74:28:54.86 SN Ia 0.05
TNS 2025xqy [ATLAS25llq] 06:24:25.994 -06:59:28.38 SN II 0.0213 Redshift from galaxy lines in spectrum. 06:24:25.977 -06:59:28.57 SN II 0.0213
TNS 2025xek [ATLAS25ldr] 09:13:31.870 -60:46:59.02 SN Ic 0.0095 0.0095 Redshift from NED. 09:13:31.870 -60:46:59.02 SN Ic 0.0095

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